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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /include/linux/minix_fs.h | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'include/linux/minix_fs.h')
-rw-r--r-- | include/linux/minix_fs.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/include/linux/minix_fs.h b/include/linux/minix_fs.h new file mode 100644 index 00000000..13fe09e0 --- /dev/null +++ b/include/linux/minix_fs.h @@ -0,0 +1,106 @@ +#ifndef _LINUX_MINIX_FS_H +#define _LINUX_MINIX_FS_H + +#include <linux/types.h> +#include <linux/magic.h> + +/* + * The minix filesystem constants/structures + */ + +/* + * Thanks to Kees J Bot for sending me the definitions of the new + * minix filesystem (aka V2) with bigger inodes and 32-bit block + * pointers. + */ + +#define MINIX_ROOT_INO 1 + +/* Not the same as the bogus LINK_MAX in <linux/limits.h>. Oh well. */ +#define MINIX_LINK_MAX 250 +#define MINIX2_LINK_MAX 65530 + +#define MINIX_I_MAP_SLOTS 8 +#define MINIX_Z_MAP_SLOTS 64 +#define MINIX_VALID_FS 0x0001 /* Clean fs. */ +#define MINIX_ERROR_FS 0x0002 /* fs has errors. */ + +#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode))) + +/* + * This is the original minix inode layout on disk. + * Note the 8-bit gid and atime and ctime. + */ +struct minix_inode { + __u16 i_mode; + __u16 i_uid; + __u32 i_size; + __u32 i_time; + __u8 i_gid; + __u8 i_nlinks; + __u16 i_zone[9]; +}; + +/* + * The new minix inode has all the time entries, as well as + * long block numbers and a third indirect block (7+1+1+1 + * instead of 7+1+1). Also, some previously 8-bit values are + * now 16-bit. The inode is now 64 bytes instead of 32. + */ +struct minix2_inode { + __u16 i_mode; + __u16 i_nlinks; + __u16 i_uid; + __u16 i_gid; + __u32 i_size; + __u32 i_atime; + __u32 i_mtime; + __u32 i_ctime; + __u32 i_zone[10]; +}; + +/* + * minix super-block data on disk + */ +struct minix_super_block { + __u16 s_ninodes; + __u16 s_nzones; + __u16 s_imap_blocks; + __u16 s_zmap_blocks; + __u16 s_firstdatazone; + __u16 s_log_zone_size; + __u32 s_max_size; + __u16 s_magic; + __u16 s_state; + __u32 s_zones; +}; + +/* + * V3 minix super-block data on disk + */ +struct minix3_super_block { + __u32 s_ninodes; + __u16 s_pad0; + __u16 s_imap_blocks; + __u16 s_zmap_blocks; + __u16 s_firstdatazone; + __u16 s_log_zone_size; + __u16 s_pad1; + __u32 s_max_size; + __u32 s_zones; + __u16 s_magic; + __u16 s_pad2; + __u16 s_blocksize; + __u8 s_disk_version; +}; + +struct minix_dir_entry { + __u16 inode; + char name[0]; +}; + +struct minix3_dir_entry { + __u32 inode; + char name[0]; +}; +#endif |